Stream.CopyTo Method (Stream)
.NET Framework 4
Reads the bytes from the current stream and writes them to the destination stream.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- destination
- Type: System.IO.Stream
The stream that will contain the contents of the current stream.
| Exception | Condition |
|---|---|
| ArgumentNullException | destination is null. |
| NotSupportedException | The current stream does not support reading. -or- destination does not support writing. |
| ObjectDisposedException | Either the current stream or destination were closed before the CopyTo method was called. |
| IOException | An I/O error occurred. |
The following example copies the contents of a FileStream to a MemoryStream.
// Create the streams. MemoryStream destination = new MemoryStream(); using (FileStream source = File.Open(@"c:\temp\data.dat", FileMode.Open)) { Console.WriteLine("Source length: {0}", source.Length.ToString()); // Copy source to destination. source.CopyTo(destination); } Console.WriteLine("Destination length: {0}", destination.Length.ToString());
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
